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    METHODS AND SYSTEMS FOR QUALITY CONTROLLED ENCODING
    1.
    发明申请
    METHODS AND SYSTEMS FOR QUALITY CONTROLLED ENCODING 有权
    质量控制编码的方法和系统

    公开(公告)号：US20080260042A1

    公开(公告)日：2008-10-23

    申请号：US11739075

    申请日：2007-04-23

    申请人： Devarshi Shah ,  Phanikumar Bhamidipati ,  Vinod Kaushik ,  Serafim S. Loukas

    发明人： Devarshi Shah ,  Phanikumar Bhamidipati ,  Vinod Kaushik ,  Serafim S. Loukas

    IPC分类号： H04N7/52

    CPC分类号： H04N19/00133 ,  H04N19/124 ,  H04N19/134 ,  H04N19/137 ,  H04N19/147 ,  H04N19/15 ,  H04N19/154 ,  H04N19/194 ,  H04N19/196 ,  H04N19/197 ,  H04N19/61

    摘要： This disclosure describes techniques for controlling a perceived quality of multimedia sequences to try to achieve a desired constant perceptual quality regardless of the content of the sequences. In particular, an encoding device may implement quality control techniques to associate a sequence segment with a content “class” based on the content of the segment, determine a perceptual quality metric of the sequence segment, and adjust at least one encoding parameter used to encode the segment is encoded such that for the perceptual quality of the sequence segment converges to the desired quality.

    摘要翻译： 本公开描述了用于控制多媒体序列的感知质量以尝试实现期望的恒定感知质量的技术，而不管序列的内容如何。 特别地，编码装置可以实施质量控制技术，以基于片段的内容将序列片段与内容“类”相关联，确定序列片段的感知质量度量，并且调整用于编码的至少一个编码参数 对片段进行编码，使得对于序列片段的感知质量收敛到期望的质量。

    Error resilience using out of band directory information
    4.
    发明授权
    Error resilience using out of band directory information 有权
    使用带外目录信息的错误恢复能力

    公开(公告)号：US08976858B2

    公开(公告)日：2015-03-10

    申请号：US11435050

    申请日：2006-05-15

    申请人： Thadi M. Nagaraj ,  Bruce Collins ,  Amnon Silberger ,  Gordon Kent Walker ,  Serafim S. Loukas ,  Vijayalakshmi R. Raveendran

    发明人： Thadi M. Nagaraj ,  Bruce Collins ,  Amnon Silberger ,  Gordon Kent Walker ,  Serafim S. Loukas ,  Vijayalakshmi R. Raveendran

    IPC分类号： H04N7/12 ,  H04L29/06 ,  H04L1/00

    CPC分类号： H04L29/06027 ,  H04L1/0083 ,  H04L65/607 ,  H04L65/80

    摘要： A method and apparatus to improve error resiliency in processing a multimedia bitstream is described. A directory of header information is generated for a multimedia bitstream. The directory information comprises packet header information associated with the multimedia bitstream. The directory information may be transmitted to a receiver along with the multimedia bitstream. A receiver of the multimedia bitstream and the directory can utilize the header information to identify and locate packets within and subsequent to erroneous data in the received bitstream. By identifying and locating packets that may otherwise be discarded, the receiver may be able to improve error recovery and decoding of the multimedia data.

    摘要翻译： 描述了一种在处理多媒体位流时提高错误弹性的方法和装置。 为多媒体比特流生成头信息的目录。 目录信息包括与多媒体比特流相关联的分组报头信息。 目录信息可以与多媒体比特流一起发送到接收机。 多媒体比特流和目录的接收机可以利用头信息来识别和定位在接收到的比特流中的错误数据内和之后的分组。 通过识别和定位可能被丢弃的分组，接收机可能能够改善多媒体数据的错误恢复和解码。

    TRANSCODER MEDIA TIME CONVERSION
    5.
    发明申请
    TRANSCODER MEDIA TIME CONVERSION 审中-公开
    TRANSCODER媒体时间转换

    公开(公告)号：US20080212690A1

    公开(公告)日：2008-09-04

    申请号：US11961955

    申请日：2007-12-20

    申请人： Serafim S. Loukas

    发明人： Serafim S. Loukas

    IPC分类号： H04N7/26

    CPC分类号： H04N21/44004 ,  H04N19/40 ,  H04N19/61 ,  H04N21/23406 ,  H04N21/234309 ,  H04N21/234381 ,  H04N21/242 ,  H04N21/41407

    摘要： In general, this disclosure describes techniques of compensating for differences between a clock associated with an input stream of media data and a clock associated with an output stream of media data. Due to drift between a clock that governs the rate at which a transcoder receives media data units (“MDUs”) and a clock that governs the rate at which the transcoder outputs MDUs, the transcoder may receive MDUs at a rate that is faster or slower than a rate at which the transcoder outputs the MDUs. The transcoder compensates for such differences by identifying sets of received MDUs that account for a time equal to an output period minus a correction magnitude, modifying the identified sets of MDUs such that the sets of MDUs account for a time equal to the output period, and outputting the modified sets of MDUs as part of the output stream.

    摘要翻译： 通常，本公开描述了补偿与媒体数据的输入流相关联的时钟与与媒体数据的输出流相关联的时钟之间的差异的技术。 由于管理代码转换器接收媒体数据单元（“MDU”）的速率的时钟和管理代码转换器输出MDU的速率的时钟之间的漂移，代码转换器可以以更快或更慢的速率接收MDU 而不是代码转换器输出MDU的速率。 代码转换器通过识别占用等于输出周期的时间减去校正幅度的接收MDU的集合来补偿这样的差异，修改所识别的MDU组，使得MDU组占用等于输出周期的时间，以及 输出修改后的MDU组作为输出流的一部分。